The concept of a particle is only an approximation, valid in the classical limit.
粒子的概念只是一个近似，在经典极限下有效。
Editing is not just about cutting and splicing; it's about finding the rhythm and soul of the story.
You are not defined by your past. You are prepared by your past.
The great secret that all old people share is that you really haven't changed in seventy or eighty years. Your body changes, but you don't change at all.
乐观主义者认为这是所有可能世界中最好的一个。悲观主义者则担心这是真的。